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Extended driving impairs nocturnal driving performances.
Stockholm University, Faculty of Social Sciences, Stress Research Institute.
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2008 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 3, no 10, e3493- p.Article in journal (Refereed) Published
Abstract [en]

Extended driving impairs nocturnal driving performances.

Sagaspe P, Taillard J, Akerstedt T, Bayon V, Espié S, Chaumet G, Bioulac B, Philip P. GENPPHASS, CHU Pellegrin, Bordeaux, France.

Though fatigue and sleepiness at the wheel are well-known risk factors for traffic accidents, many drivers combine extended driving and sleep deprivation. Fatigue-related accidents occur mainly at night but there is no experimental data available to determine if the duration of prior driving affects driving performance at night. Participants drove in 3 nocturnal driving sessions (3-5 am, 1-5 am and 9 pm-5 am) on open highway. Fourteen young healthy men (mean age [+/-SD] = 23.4 [+/-1.7] years) participated Inappropriate line crossings (ILC) in the last hour of driving of each session, sleep variables, self-perceived fatigue and sleepiness were measured. Compared to the short (3-5 am) driving session, the incidence rate ratio of inappropriate line crossings increased by 2.6 (95% CI, 1.1 to 6.0; P<.05) for the intermediate (1-5 am) driving session and by 4.0 (CI, 1.7 to 9.4; P<.001) for the long (9 pm-5 am) driving session. Compared to the reference session (9-10 pm), the incidence rate ratio of inappropriate line crossings were 6.0 (95% CI, 2.3 to 15.5; P<.001), 15.4 (CI, 4.6 to 51.5; P<.001) and 24.3 (CI, 7.4 to 79.5; P<.001), respectively, for the three different durations of driving. Self-rated fatigue and sleepiness scores were both positively correlated to driving impairment in the intermediate and long duration sessions (P<.05) and increased significantly during the nocturnal driving sessions compared to the reference session (P<.01). At night, extended driving impairs driving performances and therefore should be limited.

Place, publisher, year, edition, pages
2008. Vol. 3, no 10, e3493- p.
Keyword [en]
Fatigue, Sleepiness, Nocturnal driving, Sleep-related vehicle accidents
National Category
Medical and Health Sciences
URN: urn:nbn:se:su:diva-14896PubMedID: 18941525OAI: diva2:181416
Internt P2688Available from: 2008-11-07 Created: 2008-11-07 Last updated: 2011-01-10Bibliographically approved

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